774
WWUS85 KCYS 060715
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
115 AM MDT Wed Aug 6 2025

...MULTI-DAY CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THIS
WEEK WITH LITTLE OVERNIGHT RELIEF...

.A multi-day critical fire weather event is ongoing this week due
to low RH values into the teens and single digits, alongside poor
overnight recoveries and gusty winds. Overnight recoveries may
rise a little higher or winds a bit less breezy on some days, but
overall conditions will be poor for a majority of the week.

WYZ417-418-061515-
/O.EXB.KCYS.FW.W.0017.250807T1800Z-250808T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-
Middle North Platte River Basin/Niobrara and Converse High Plains-
115 AM MDT Wed Aug 6 2025

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY FOR
LOW RH VALUES AND GUSTY WINDS FOR FIRE WEATHER ZONES 417 AND
418...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Thursday.

* AFFECTED AREA...Fire weather zones 422, 423, 424, 425, and
  426.

* WIND...West to southwest winds gusting 20 to 30 mph, isolated
  gusts 35 to 40 mph.

* HUMIDITY...5 to 15 percent; overnight recoveries 25 to 40
  percent.

* IMPACTS...any fires that develop will likely spread rapidly.
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

WYZ419>429-061515-
/O.CON.KCYS.FW.W.0017.000000T0000Z-250809T0000Z/
North Laramie Range and Adjacent High Plains-
North Laramie Valley/Shirley Basin-
Ferris/Seminoe/Shirley Mountains-Central and West Carbon-
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Upper North Platte River Basin-Snowy Range/Medicine Bow NF-
North Snowy Range Foothills-Southern Laramie Valley-
Southern Laramie Range-
115 AM MDT Wed Aug 6 2025

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM MDT FRIDAY FOR
LOW RH VALUES, POOR OVERNIGHT RECOVERY, AND GUSTY WINDS FOR FIRE
WEATHER ZONES 419, 420, 421, 422, 423, 424, 425, 426, 427, 428,
AND 429...

* AFFECTED AREA...Fire weather zone 419.

* WIND...West winds gusting 20 to 30 mph, isolated gusts 35 to
  40 mph.

* HUMIDITY...8 to 12 percent; overnight recoveries as low as 25
  to 40 percent.

* IMPACTS...any fires that develop will likely spread rapidly.
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$